JP2019096691A5

JP2019096691A5 -

Info

Publication number: JP2019096691A5
Application number: JP2017223643A
Authority: JP
Filing date: 2017-11-21
Publication date: 2021-01-07
Anticipated expiration: 2037-11-21

Claims

Dielectric and
A pair of N differential signal vias (N is an integer of 2 or more) provided so as to penetrate the dielectric, and
N first strip conductor pairs provided on the first surface of the dielectric and
The N first strip conductor pair provided inside the dielectric and the first ground conductor layer constituting the dielectric and N first differential transmission lines, respectively.
N second strip conductor pairs provided on the second surface of the dielectric and
The N second strip conductor pairs provided inside the dielectric and the second ground conductor layer constituting the dielectric and N second differential transmission lines, respectively.
Have,
The N first strip conductor pair and the second strip conductor pair are connected to each other via the pair of the N differential signal vias.
The first ground conductor layer comprises a single first opening for insulating from a pair of the N differential signal vias, and the second ground conductor layer is of the N differential signal vias. With a single second opening to insulate the pair
Said pair of N differential signal vias, as well as through the single first and second openings are arranged along one direction in the first and in the second opening,
Printed circuit board.

The printed circuit board according to claim 1.
It further has (2N + 2) ground conductor vias arranged to surround each of the pairs of N differential signal vias.
Two ground conductor vias of the (2N + 2) ground conductor vias are placed between the pair of two adjacent differential signal vias of the pair of the N differential signal vias. arranged to face each other across the first and second openings,
The (2N + 2) ground conductor vias connect to the first and second ground conductor layers outside the first and second openings.
A printed circuit board characterized by that.

The printed circuit board according to claim 1 .
Of the N differential signal via pairs, the center-to-center distance D1 of the pair of two adjacent differential signal vias, and the two adjacent first pairs connected to the pair of the two adjacent differential signal vias. When the distance between the centers of the differential transmission line is P, (D1, P) are (0.6 mm, 1.2 mm) and (0.9 m).
m, 1.6 mm), (1.2 mm, 2.2 mm), (0.6 mm, 2.2 mm) is located on the side of the quadrangle or on the side of the range of the quadrangle.
A printed circuit board characterized by that.

Dielectric and
A pair of N differential signal vias (N is an integer of 2 or more) provided so as to penetrate the dielectric, and
N first strip conductor pairs provided on the first surface of the dielectric and
The N first strip conductor pair provided inside the dielectric and the first ground conductor layer constituting the dielectric and N first differential transmission lines, respectively.
N second strip conductor pairs provided on the second surface of the dielectric and
The N second strip conductor pairs provided inside the dielectric and the second ground conductor layer constituting the dielectric and N second differential transmission lines, respectively.
Have,
The N first strip conductor pair and the second strip conductor pair are connected to each other via the pair of the N differential signal vias.
Of the N pairs of differential signal vias, the distance D1 between the centers of the pairs of two adjacent differential signal vias, and the two adjacent first pairs connected to the pair of the two adjacent differential signal vias. When the distance between the centers of the differential transmission line is P, (D1, P) are (0.6 mm, 1.2 mm) and (0.9 m).
m, 1.6 mm), (1.2 mm, 2.2 mm), (0.6 mm, 2.2 mm) is located on the side of the quadrangle or on the side of the range of the quadrangle.
A printed circuit board characterized by that.

The printed circuit board according to claim 4.
The first ground conductor layer comprises a single first opening for insulating from a pair of the N differential signal vias, and the second ground conductor layer is of the N differential signal vias. With a single second opening to insulate the pair
Said pair of N differential signal vias, as well as through the single first and second openings are arranged along one direction in the first and in the second opening,
A printed circuit board characterized by that.

The printed circuit board according to claim 4 .
It further has (2N + 2) ground conductor vias arranged to surround each of the pairs of N differential signal vias.
Two ground conductor vias of the (2N + 2) ground conductor vias are placed between the pair of two adjacent differential signal vias of the pair of the N differential signal vias. arranged to face each other across the first and second openings,
The (2N + 2) ground conductor vias connect to the first and second ground conductor layers outside the first and second openings.
A printed circuit board characterized by that.

An optical transmitter / receiver comprising the printed circuit board according to claim 1 or 4 .

The optical transmitter / receiver according to claim 7.
An optical transmission subassembly that outputs an optical signal,
An optical receiving subassembly that converts an input optical signal into an electrical signal,
A flexible substrate on which N third differential transmission lines are formed,
IC and
The printed circuit board, the optical receiving subassembly, the flexible board, and a case for storing the IC are further provided.
Before SL electrical signal through the third differential transmission line of the flexible substrate is coupled to the first differential transmission line of the printed circuit board,
An optical transmitter / receiver characterized by that.